bwilliams
043e307663
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terminal logging mode.
94 lines
2.7 KiB
Go
94 lines
2.7 KiB
Go
package websocket
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import (
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"bufio"
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"context"
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"errors"
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"net"
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"testing"
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"time"
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"git.avsdev.uk/Go/job-search/internal/config"
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)
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// pipeClient runs a plain TCP client of h on an in-memory pipe and reads its
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// welcome. It returns the peer's end, which the test stops reading from to
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// make the client's writes block, and a channel closed when ServeTCP returns.
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func pipeClient(t *testing.T, h *Hub) (net.Conn, chan struct{}) {
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t.Helper()
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server, peer := net.Pipe()
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t.Cleanup(func() { server.Close(); peer.Close() })
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done := make(chan struct{})
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go func() { h.ServeTCP(context.Background(), server); close(done) }()
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peer.SetReadDeadline(time.Now().Add(time.Second))
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if _, err := bufio.NewReader(peer).ReadString('\n'); err != nil {
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t.Fatalf("welcome: %v", err)
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}
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waitCount(t, h, 1)
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return peer, done
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}
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// If ctx expires before the clients have closed, Shutdown closes the rest at
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// once and returns ctx's error.
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func TestShutdownTimeout(t *testing.T) {
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// No write timeout: the client's goodbye blocks until it is cut short.
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h := NewHub(config.JSCServerWebSocket{}, WithLogger(discardLog))
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_, done := pipeClient(t, h)
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ctx, cancel := context.WithTimeout(context.Background(), 20*time.Millisecond)
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defer cancel()
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if err := h.Shutdown(ctx); !errors.Is(err, context.DeadlineExceeded) {
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t.Fatalf("Shutdown = %v; want context.DeadlineExceeded", err)
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}
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select {
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case <-done:
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case <-time.After(time.Second):
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t.Fatal("client not closed after the shutdown timeout")
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}
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}
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// Shutdown with no clients returns at once, even with an expired ctx.
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func TestShutdownNoClients(t *testing.T) {
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h := NewHub(config.JSCServerWebSocket{}, WithLogger(discardLog))
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ctx, cancel := context.WithCancel(context.Background())
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cancel()
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for range 20 {
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if err := h.Shutdown(ctx); err != nil {
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t.Fatalf("Shutdown = %v; want nil", err)
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}
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}
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}
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// A ping that can't be sent within the pong timeout drops the client.
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func TestPingFailureDropsClient(t *testing.T) {
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h := NewHub(config.JSCServerWebSocket{
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PingInterval: 10 * time.Millisecond,
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PongTimeout: 20 * time.Millisecond,
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}, WithLogger(discardLog))
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_, done := pipeClient(t, h)
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select {
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case <-done:
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case <-time.After(time.Second):
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t.Fatal("client not dropped after a failed ping")
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}
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waitCount(t, h, 0)
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}
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func TestMaxMessageSize(t *testing.T) {
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tests := []struct {
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conf config.JSCServerWebSocket
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want int
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}{
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{config.JSCServerWebSocket{}, defaultMaxMessageSize},
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{config.JSCServerWebSocket{MaxMessageSize: -1}, defaultMaxMessageSize},
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{config.JSCServerWebSocket{MaxMessageSize: 100}, 100},
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}
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for _, tt := range tests {
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h := NewHub(tt.conf, WithLogger(discardLog))
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if got := h.maxMessageSize(); got != tt.want {
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t.Errorf("maxMessageSize(%d) = %d; want %d", tt.conf.MaxMessageSize, got, tt.want)
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}
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}
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}
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